Knowledge Base

When attempting to use SocketTools components or libraries to connect with a mail server using either SMTP, POP3 or IMAP, the connection fails or an error is returned indicating the user's credentials are invalid. The user name and password are valid and a connection can be established using a mail client such as Outlook.

SocketTools components and installers are digitally signed using an Authenticode certificate. On Windows XP and Windows Server 2003, the operating system reports the signature as invalid. This occurs because older versions of Windows do not support the SHA-256 algorithm used when timestamping the signature.

When attempting to perform a network operation, such as sending or receiving data, it fails with an error indicating that the operation would block.

If you attempt to connect to a server and it fails with a "connection reset" error, there can be several causes for this problem. It can be related to the router configuration, proxy settings, a firewall blocking the outbound connection or a conflict with your anti-virus software. It can also indicate a transitory problem with

When attempting to perform a network operation, such as sending or receiving data, it fails with an error indicating that a blocking operation is in progress.

Microsoft Defender SmartScreen is a security feature of Windows which is designed to protect you from potentially dangerous websites and downloaded files. This warning does not indicate the SocketTools installer or components contain malware.

SocketTools includes support for Unicode in several different ways, depending on the edition and development tools used. This article discusses how Unicode support is implemented for the current version of each SocketTools edition.

When connecting to an Office 365 mail server, the connection fails with an error that indicates it could not create a security context. The application had been working previously and the account credentials are valid.

The CreateObject function can be used in Visual Basic, Visual Basic for Applications (VBA) and VBScript to dynamically create an instance of a SocketTools ActiveX control. To redistribute an application which uses CreateObject with a SocketTools control, the control's Initialize method must be called.

Support for secure credit card transactions using TLS 1.0 ended on June 30, 2018. The new standards defined by the PCI Security Standard Council requires all payment processors and third-party providers to explicitly disable support for TLS 1.0 and switch to exclusively using TLS 1.2.